Technician A says diagnostic scan tester operation varies depending on the make and model of the scan tool. Technician B says one of the major differences between OBD II and OBD I scan tools is how and where they are connected to the DLC. Who is correct?
A) A only
B) B only
C) both A and B
D) neither A nor B

Question

Quizplus · Accepted Answer

Diagnostic scan testers indeed vary in operation depending on their make and model, as they are designed to interface with a wide range of vehicle systems and protocols. OBD II and OBD I also differ significantly in their connection protocols and locations for the Diagnostic Link Connector (DLC), with OBD II standardizing the connector location and communication protocols across most vehicles post-1996.

Technician a Says Diagnostic Scan Tester Operation Varies Depending on the Make